Results 11 to 20 of about 38,834 (246)

Developing a Universal Software for the Conceptual Design of Cryogenic Rocket Propulsion System [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2022
In this article, a universal algorithm and engineering software is presented for the conceptual design of cryogenic rocket propulsion system. The algorithm consisting five engine working cycles: pressure fed, gas generator, staged combustion, closed and ...
Nourbakhsh Fouladi   +1 more
doaj   +1 more source

A Concept for Striking Range Improvement of the GROM/PIORUN Man-Portable Air-Defence System [PDF]

open access: yesProblemy Mechatroniki, 2017
This paper presents a concept for striking distance performance improvement of the GROM/PIORUN Man-Portable Air-Defence System rocket missiles by increasing the rated diameter of the rocket missile propulsion system and its fuel charge weight.
Krzysztof MOTYL   +4 more
doaj   +1 more source

Reverse design of solid propellant grain based on deep learning: Imaging internal ballistic data

open access: yesDefence Technology
The reverse design of solid rocket motor (SRM) propellant grain involves determining the grain geometry to closely match a predefined internal ballistic curve. While existing reverse design methods are feasible, they often face challenges such as lengthy
Lin Sun   +6 more
doaj   +1 more source

Ignition and Combustion Characteristics of Aluminum Hydride-Based Kerosene Propellant

open access: yesAerospace
Aluminum hydride (AlH3) is a promising candidate for enhancing the combustion performance of liquid fuels due to its high energy density and exceptional hydrogen storage capacity.
Jiangong Zhao   +4 more
doaj   +1 more source

Research on the Design and Bidirectional Work Process of Metal Diaphragms in Small Double-Pulse Solid Rocket Motors

open access: yesAerospace
According to the requirements of the small double-pulse solid rocket motor, a compartmentalized isolation device has been designed. This device consists of a metal diaphragm and a support frame. An experimental study and numerical simulation were used to
Xueqin Du   +4 more
doaj   +1 more source

A Load-Carrying Capacity Evaluation Method for the Welded Joints of Rocket Engine Frame

open access: yesAerospace, 2023
The load-carrying capacities of welded joints need to be paid attention to in the design of the frame, which transfers the thrust generated by the rocket engine to the rocket body.
Yushan Gao   +3 more
doaj   +1 more source

Physical Mechanics, a New Field in Engineering Science [PDF]

open access: yes, 1953
The purpose of physical mechanics is to predict the engineering behavior of matter in bulk form from the microscopic properties of its molecular and atomic constituents.
Tsien, H. S.
core   +1 more source

Multi-Objective Design Optimization of Solid Rocket Motors via Surrogate Modeling

open access: yesAerospace
To reduce the high computational cost and lengthy design cycles of traditional solid rocket motor (SRM) development, this paper proposes an efficient surrogate-assisted multi-objective optimization approach.
Xinping Fan   +7 more
doaj   +1 more source

A Review of Recent Developments in Hybrid Rocket Propulsion and Its Applications

open access: yesAerospace
This paper extensively reviews hybrid rocket propulsion-related activities from combustion engine designs to launch tests. Starting with a brief review of rocket propulsion development history, a comparison among the three bi-propellant rocket propulsion
Shih-Sin Wei   +4 more
doaj   +1 more source

Beyond Earth: Resilience of Quasi‐2D Perovskite Solar Cells in Space

open access: yesAdvanced Materials, EarlyView.
In the article (DOI: 10.1002/adma.202520433), Christoph Putz and co‐workers demonstrate rigid quasi‐2D perovskite solar cells operating in low Earth orbit, delivering stable power for more than 100 days under real‐space conditions. In‐orbit performance is correlated with extensive ground‐based thermal and proton‐irradiation studies on rigid and ...
Christoph Putz   +17 more
wiley   +1 more source

Home - About - Disclaimer - Privacy